Finding unique in common

A view of Darling Harbor with a huge tree underlying the view. Lots of people were sitting near the sun, desperately wanting to have a fair share of tan on their skin. The seagulls were competing to grab the leftovers. The ships were busy looking for a suitable place to dock. Teenagers were engrossed with their partner's gaze and beauty. Ferries operator look ahead of the long queue of people attempting to get a convenient seat. Kids were obsessed and ran around a fountain which looks intriguing. Working adults dressed in black suits kept themselves occupied thinking about the politics in the office and the mountains of workload. Elderly were spending their evening in the loving arms, appreciating the sounds and sights. And what did i do? Busy running around trying to find a suitable angle for a snapshot....